/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author user
 */
public class DownloadFile extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        HttpSession session = request.getSession();

        if (session.getAttribute("role") == null) {
            Login servlet = new Login();
            servlet.processRequest(request, response);
        } else {
            String namaFile = null;
            String lokasi = null;
            if (request.getParameter("fileSkPenelitian") != null) {
                namaFile = request.getParameter("fileSkPenelitian");
                lokasi = "C:\\File\\Penelitian\\SK\\";
            } else if (request.getParameter("fileLapPenelitian") != null) {
                namaFile = request.getParameter("fileLapPenelitian");
                lokasi = "C:\\File\\Penelitian\\Laporan_Penelitian\\";
            } else if (request.getParameter("fileSkPengmas") != null) {
                namaFile = request.getParameter("fileSkPengmas");
                lokasi = "C:\\File\\Pengmas\\SK\\";
            } else if (request.getParameter("fileLapPengmas") != null) {
                namaFile = request.getParameter("fileLapPengmas");
                lokasi = "C:\\File\\Pengmas\\Laporan_Pengmas\\";
            } else if (request.getParameter("fileKaryaIlmiah") != null) {
                namaFile = request.getParameter("fileKaryaIlmiah");
                lokasi = "C:\\File\\KaryaIlmiah\\";
            } else if (request.getParameter("filePenawaran") != null) {
                namaFile = request.getParameter("filePenawaran");
                lokasi = "C:\\File\\PenawaranPpm\\";
            } else if (request.getParameter("namaFile") != null) {
                namaFile = request.getParameter("namaFile");
                lokasi = "C:\\File\\upload_beasiswa\\";
            } else if (request.getParameter("filePrestasi") != null) {
                namaFile = request.getParameter("filePrestasi");
                lokasi = "C:\\File\\upload_prestasi\\";
            }
            response.setContentType("application/octet-stream");
            response.setHeader("Content-Disposition", "attachment;filename=" + namaFile);

            File file = new File(lokasi + namaFile);
            if (file.canRead()) {
                FileInputStream fileIn = new FileInputStream(file);
                ServletOutputStream out = response.getOutputStream();

                byte[] outputByte = new byte[4096];
                //copy binary contect to output stream
                while (fileIn.read(outputByte, 0, 4096) != -1) {
                    out.write(outputByte, 0, 4096);
                }
                fileIn.close();
                out.flush();
                out.close();
            } else {
                System.out.println("gagal");
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
